Plumber&#39;s furnace



J. B. ANDERSON.

PLUMBERS FURNACE.

APPLICATION FILED SEPT. 28. 1921.

Patented Dec. 12, 1922.

2 SHEETS-SHEET 1- m/VENTOR. $012425. flnderson J. B. ANDERSON.

PLUMBER'S FURNACE. APPLICATION FIVLED SEPT. 28. 1921.

1,438,678 Patented Dec. 12, 1922.

In- I \iiliiiiiiifl INVENTOR.

Patented Dec. l2, 1922.

UMPLESS BLOl/V CHURCH CUMPANY GF PITTSBURGH, PENNSYLVANIA.

rnurirnnn s FURNACE.

Application filed September 28, 1921. Serial N0. 503,963.

provide a furnace that is adapted for the rapid heating of soldering-irons as well as for heating solder in n'ielting-pots, or other material contained in vessels. Still another object is to provide furnace that can be operated without requiring a pressure pump as now commonly used on such devices. Further objects will appear from the drawings and specification which form a part of this application.

In the present application I desire especially to describe my new furnace as applied to a new type of torclrhurners illustrated and claimed in a co-pending application for patents of even date, as well as to blow torches described in the following patents: ll. 1,364,972, June 11, 1921 and rice. 1390364 and 1,390,265 dated Sept. 13 1991. which were issued to Charles H. Allen and myself.

Referring to the drawings:

Fig. 1 is a front elevation, partly shown in section, of my plumbers-furnace.

Fix. 2 is a top plan view corresponding 3 is a fragmentary side elevation of my furnace.

The preferred construction of my furnace comprises a fuel tank 1, shown pumpless because of the use of liquefied gas fuel,

as explained in the aforementioned patent references. entrally of the top of the tank is mounted the vertical burner-device 2 pro vided with the test-valve 3, the safety-valve 1, the liquid valve 5 and the gaseous fuel valve 6. The burner proper 7 is of the nonclogging type described in the copending application of even date, and is surrounded by the perforated flame-tube 8. The pilotlourner illustrated in said application is eliminated owing to the fact that the vertical arrangement of the burner-devicewould so diminish the ei'liciency of vaporization of the fuel from the main burner asto not warrant the additional expenditure which said pilot-burner would occasion.

Theupper structure of the furnace consists of the posts 9, securely mounted on the tank and threaded at the top. These posts support the heatingchainber 10 which is mounted'thereon by means of the aperture'd cars 11 formed integral with the body oftliedieatingchamber and which are secured between the clamping nuts 12 and 13,

threaded on said posts.

Theheating-chamber is open at, the top, while inthe bottom thereof I provide the oblong flame-aperture 15 which is' of sufiicient length to accommodate severalsoldering-irons at a time. The flan'ieaperture is also surrounded by the required number of smaller circular apertures for the purpose of insuring a proper upward draft of air within the heating-chainber.

The soldering-irons are introduced into the heating-chamber through the rectangular opening 17, laterally disposed on the heatingchamher. This opening is provided with a cover 18, hinged at the lower side by the pin connections 19. As will be noted in the drawings the opening is surrounded by a rim 20, having an inclined face, so that the cover (once shut) will retain its closed position by its own weight. Centrally of the lower side of the cover 1 provide the extension 21 for the purpose of limiting the opening of the cover to the horizontal position shown in dot and dash lines in Fig. 3, thus securing a substantiall -J level support for the solder-irons.

Intermediate the ears 11 and the top nuts 12 are mounted the flat and oblonglinks 29, which act as support for the melting-pots. These links can be adjusted longitudinally to accommodate various sizes of meltinmpots. Suitable notches 23 are cut radially in the upper edge of the heating-chamber to act as lateral guides for said links. The depth of the notches is prefe ably made such that the links will not protrude above the edge of the heating chamber.

When the furnace is to be used forhea-ting soldering-irons exclusively. it is advisable to cover the top of the heating chamber in order to increase the utilization of the flame. F or this purpose I provide the heating-chamber with the removable top lid 24, of somewhat smaller diameter than the inside or the heating-chamber. This lid isfurnished with an adequate number of lugs 25 having downwardly bent extensions Q6 which embrace. the outer periphery of the heating-chamber to properly maintain the lid thereon. /Vhen operating the furnace with the lid on, the gases of combustion Will escape through the annular space 27 provided between the lid and the wall of the heating-chamber.

v Diametrically disposed on the heatingchamber, and securely mounted thereon, are the two eyes 28 Which are engagedby the rality of radially adjustable supports for vessels positioned upon said heating-chamber; a removable lid for, and of lesser diameter than, said heating-chamber, and means for supporting said lid thereon.

2. In a plumbers-furnace, the combination of a heating-chamber open at the top; a plurality of radially adjustable supports for vessels positioned upon said heating-chamher; a removable lid for, and of lesser diamter than, said heating-chamber, and a plurality of lugs extending outwardly of said lid and having downwardly bent extremities for peripheral engagement with said heating-chamber. v

3. In a plumbers-furnace, the' combination of a fuel tank; a plurality ofvertical posts mounted thereon and threaded at their upper ends; a heating-chamber supported by said posts; a plurality of apertured ears secured on said heating-chamber and engaged by said posts; a plurality of oblong links positioned on said ears and'enga'ged by said posts; a plurality of notches provided in the upper edge of said heating-chamber for radially guiding said links, and threaded nuts engaging said posts for securing said links in their selected position.

In testimonywhereof I afiix my signature.

JAMES B. ANDERSON 

